Answer: The moles of NaOH are 0.25 moles.
Step-by-step explanation:
To calculate the number of moles, we use the following formula:

Calculations for the moles of NaOH:
Given mass of NaOH = 10 g
Molar mass of NaOH = 40 g/mol
Putting values in above equation, we get:

Hence, the moles of NaOH are 0.25 moles.